This scope lets an app "View basic information about private channels that your slack app has been added to"
This OAuth permission scope works with these Web API methods and Events API events.
groups.info - Gets information about a private channel.groups.list - Lists private channels that the calling user has access to.channel_shared - A channel has been shared with an external workspacechannel_unshared - A channel has been unshared with an external workspacegroup_archive - A private channel was archivedgroup_close - You closed a private channelgroup_deleted - A private channel was deletedgroup_left - You left a private channelgroup_open - You created a group DMgroup_rename - A private channel was renamedgroup_unarchive - A private channel was unarchivedmember_joined_channel - A user joined a public or private channelmember_left_channel - A user left a public or private channel